diff --git a/emacs/init.org b/emacs/init.org
index cbe2517..68a5a05 100755
--- a/emacs/init.org
+++ b/emacs/init.org
@@ -180,15 +180,6 @@ Better keybinding.
 				    replace)))
 #+END_SRC
 
-Delete trailing whitespace on save:
-#+BEGIN_SRC emacs-lisp
-  (defvar *should-delete-trailing-whitespace* t)
-  (defun delete-trailing-whitespace-hook-fn ()
-    (when *should-delete-trailing-whitespace*
-      (delete-trailing-whitespace)))
-  (add-hook 'before-save-hook #'delete-trailing-whitespace-hook-fn)
-#+END_SRC
-
 * Autocompletion
 There seems to be [[https://github.com/company-mode/company-mode/issues/68][some contention]] about whether autocomplete or company are better autocomplete packages. I'm going with company for now because the maintainer seems nicer...
 #+BEGIN_SRC emacs-lisp
@@ -1277,6 +1268,15 @@ Speedbar is cool but having it open in a separate frame is annoying. This makes
   (leader-def-key "S" #'switch-to-speedbar)
 #+END_SRC
 
+* Trailing whitespace
+[[https://github.com/lewang/ws-butler][ws-butler]] deletes trailing whitespace on lines that you touch, but
+leaves other lines alone:
+#+BEGIN_SRC emacs-lisp
+  (use-package ws-butler
+    :straight (ws-butler :host github :repo "lewang/ws-butler")
+    :hook ((prod-mode . ws-butler-mode)))
+#+END_SRC
+
 * Whitespace Visualation
 #+BEGIN_SRC emacs-lisp
   (setq whitespace-line-column 80